/*
XPTracker - Alternative Agile Tracking Tool
Copyright (C) 2006-2009  Stephen Starkey

This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA
*/
package org.xptracker.domain;

import org.hibernate.annotations.Proxy;
import org.joda.time.Days;
import org.joda.time.Months;
import org.joda.time.Weeks;
import org.joda.time.base.BaseSingleFieldPeriod;
import org.xptracker.persistence.Identified;

import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.Table;

@Entity
@Table(name="timeline_granularity")
@Proxy(lazy=false)
public class TimelineGranularity extends Identified {
  public enum Period {
    days {
      public BaseSingleFieldPeriod convertInterval(int interval) {
        return Days.days(interval);
      }},

    weeks {
      public BaseSingleFieldPeriod convertInterval(int interval) {
        return Weeks.weeks(interval);
      }},

    months {
      public BaseSingleFieldPeriod convertInterval(int interval) {
        return Months.months(interval);
      }};

    public abstract BaseSingleFieldPeriod convertInterval(int interval);
  }

  private int interval;
  private Period period;

  public TimelineGranularity() {
  }

  public TimelineGranularity(int interval, Period period) {
    setInterval(interval);
    this.period = period;
  }

  @Column(name="_interval")
  public int getInterval() {
    return interval;
  }

  public Period getPeriod() {
    return period;
  }

  public void setInterval(int interval) {
    this.interval = interval <= 0 ? 1 : interval;
  }

  public void setPeriod(Period period) {
    this.period = period;
  }
}
